[Mg(XeF<sub>2</sub>)<i><sub>n</sub></i>](AsF<sub>6</sub>)<sub>2</sub> (<i>n</i> = 4, 2): First Compounds of Magnesium with XeF<sub>2</sub>
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资源简介：
The reaction between Mg(AsF6)2 and XeF2 in anhydrous HF (aHF) at room temperature yields two compounds
with XeF2 bonded directly to the Mg2+ cation: [Mg(XeF2)4](AsF6)2; [Mg(XeF2)2](AsF6)2. The 1:4 compound is obtained with excess XeF2 while the 1:2 compound is prepared from stoichiometric amounts of Mg(AsF6)2 and XeF2.
[Mg(XeF2)4](AsF6)2 crystallizes in an orthorhombic crystal system, space group P212121, with a = 8.698(15) Å, b
= 14.517(15) Å, c = 15.344(16) Å, V = 1937(4) Å3, and Z = 4. The octahedral coordination sphere of Mg
consists of one fluorine atom from each of the four XeF2 molecules and two fluorine atoms from the two AsF6 units.
[Mg(XeF2)2](AsF6)2 crystallizes in the orthorhombic crystal system, space group Pbam, with a = 8.9767(10) Å, b
= 15.1687(18) Å, c = 5.3202(6) Å, V = 724.42(14) Å3, and Z = 2. The octahedral coordination sphere consists
of two fluorine atoms, one from each of the two XeF2 molecules and four fluorine atoms from the four bridging
AsF6 units.
创建时间：
2004-01-26
